180-x=8(90-x)

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Solution for 180-x=8(90-x) equation:


Simplifying
180 + -1x = 8(90 + -1x)
180 + -1x = (90 * 8 + -1x * 8)
180 + -1x = (720 + -8x)

Solving
180 + -1x = 720 + -8x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '8x' to each side of the equation.
180 + -1x + 8x = 720 + -8x + 8x

Combine like terms: -1x + 8x = 7x
180 + 7x = 720 + -8x + 8x

Combine like terms: -8x + 8x = 0
180 + 7x = 720 + 0
180 + 7x = 720

Add '-180' to each side of the equation.
180 + -180 + 7x = 720 + -180

Combine like terms: 180 + -180 = 0
0 + 7x = 720 + -180
7x = 720 + -180

Combine like terms: 720 + -180 = 540
7x = 540

Divide each side by '7'.
x = 77.14285714

Simplifying
x = 77.14285714

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